Manufacture of leaden or other metallic pipes



sr-:YDLE & WARD.

Lead VPipe Roller.

No. 862. l' Y "Patanted Aug. 1, '1838.

N. FEYERS Pham-Lithograph", Wallington. D. C.

UNITED STATES PATENT oEEIcE.

ROBERT M. SEYDLE AND LEWIS WARD, OF MILTON, PENNSYLVANIA.

MANUFACTURE F LEADEIN OR OTHER METALLIC' PIPES.

Specification of Letters Patent No. 862, dated August 1, 1838.

T0 all whom it may concern Be it known that we, ROBERT M. SEYDLE l andLEWIS WARD, of Milton, in Northumbercircle.

land county and State of Pennsylvania, have invented a new and ImprovedMode of Manufacturing Leaden Pipes or Tubes; and we do hereby declarethat the following is an exact description thereof, reference being hadto the drawing which accompanies and makes a part of this specification.

The machine employed consists of a strong frame of which the two uprightportions A Aare made of cast iron or other metal, connected by thewooden portions B B. Supported by and revolving between the uprightportions of the frame are two iron or brazen cylinders, accuratelyturned and encircled throughout their length by parallel grooves whosearch inward toward the centers of the cylinders forms an exact semi- Thewidest and deepest grooves are near the ends of the cylinders; theremaining grooves growing progressively narrower and more shallow asthey approach the middle of the cylinders-precisely like the cylindersused in the manufacture of round rolled iron. To one end of the lowercylinder is attached the cog-wheel C which is turned by the pinion andwinch D. The upper cylinder is to be turned bythe pinion E acting uponthe pinion F and its distance with respect to the lower cylinder may beadjusted by means of the screws and brazen followers at G, G.

WVe make a cylindrical mold of a diameter to suit the larger grooves ofthe machine and having set in the center of this mold a polished ironmandrel, whose diameter is equal to the caliber of the pipe to bemanufactured. We fill the mold with melted lead which is permitted. tocool around the Inandrel as represented at H. We now pass the pipeinclosing the mandrel between the cyl` Inders, beginning with the largergrooves and then successively through the smaller until the pipe isreduced to the `diameter required. y

What we claim as our invention and discovery and desire to secure toourselves by i 'i Letters Patent is `not the rolling apparatus but Theprinciple or mode of stretching or t drawing out leaden or othermetallic pipesA upon a metallic mandrel L by means off` groovedcylinders as above described, a mode@ whereby the sides of the pipemaybe reduced to any required degree of thinnessl without danger of flawsin the metal or of being torn asunder as in the modes ordinarilypractised.

RoBT. M. `SEYDLE. `LEWIS WARD. y

Witnesses:

GEO. A. SNYDER, WM. WARD.

